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https://issues.apache.org/jira/browse/HDFS-9735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15229213#comment-15229213
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Anu Engineer commented on HDFS-9735:
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That is a good question. This is how the current
{{FsDatasetSpi#moveBlockAcrossStorage}} works. Since we don't have any bug
reports pending against this code , and the fact that a very similar issue was
explored in HDFS-9661 make me think that this code is stable. There is a
potential that diskbalancer might expose this scenario more than the mover. Are
you suggesting that I expand the scope of Synchronized ?
[~brahmareddy], [~vinayrpet] & [~arpitagarwal] would guys please care to
comment on the question from [~eddyxu]. Thanks in advance.
> DiskBalancer : Refactor moveBlockAcrossStorage to be used by disk balancer
> --------------------------------------------------------------------------
>
> Key: HDFS-9735
> URL: https://issues.apache.org/jira/browse/HDFS-9735
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: balancer & mover
> Affects Versions: HDFS-1312
> Reporter: Anu Engineer
> Assignee: Anu Engineer
> Fix For: HDFS-1312
>
> Attachments: HDFS-9735-HDFS-1312.001.patch,
> HDFS-9735-HDFS-1312.002.patch
>
>
> Refactor moveBlockAcrossStorage so that code can be shared by both mover and
> diskbalancer.
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